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-rw-r--r--drivers/net/netdevsim/netdev.c274
-rw-r--r--drivers/net/netdevsim/netdevsim.h12
2 files changed, 284 insertions, 2 deletions
diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index 828c1ce49a8b..eb8c679fca9f 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -25,6 +25,125 @@
#include "netdevsim.h"
+struct nsim_vf_config {
+ int link_state;
+ u16 min_tx_rate;
+ u16 max_tx_rate;
+ u16 vlan;
+ __be16 vlan_proto;
+ u16 qos;
+ u8 vf_mac[ETH_ALEN];
+ bool spoofchk_enabled;
+ bool trusted;
+ bool rss_query_enabled;
+};
+
+static u32 nsim_dev_id;
+
+static int nsim_num_vf(struct device *dev)
+{
+ struct netdevsim *ns = to_nsim(dev);
+
+ return ns->num_vfs;
+}
+
+static struct bus_type nsim_bus = {
+ .name = DRV_NAME,
+ .dev_name = DRV_NAME,
+ .num_vf = nsim_num_vf,
+};
+
+static int nsim_vfs_enable(struct netdevsim *ns, unsigned int num_vfs)
+{
+ ns->vfconfigs = kcalloc(num_vfs, sizeof(struct nsim_vf_config),
+ GFP_KERNEL);
+ if (!ns->vfconfigs)
+ return -ENOMEM;
+ ns->num_vfs = num_vfs;
+
+ return 0;
+}
+
+static void nsim_vfs_disable(struct netdevsim *ns)
+{
+ kfree(ns->vfconfigs);
+ ns->vfconfigs = NULL;
+ ns->num_vfs = 0;
+}
+
+static ssize_t
+nsim_numvfs_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct netdevsim *ns = to_nsim(dev);
+ unsigned int num_vfs;
+ int ret;
+
+ ret = kstrtouint(buf, 0, &num_vfs);
+ if (ret)
+ return ret;
+
+ rtnl_lock();
+ if (ns->num_vfs == num_vfs)
+ goto exit_good;
+ if (ns->num_vfs && num_vfs) {
+ ret = -EBUSY;
+ goto exit_unlock;
+ }
+
+ if (num_vfs) {
+ ret = nsim_vfs_enable(ns, num_vfs);
+ if (ret)
+ goto exit_unlock;
+ } else {
+ nsim_vfs_disable(ns);
+ }
+exit_good:
+ ret = count;
+exit_unlock:
+ rtnl_unlock();
+
+ return ret;
+}
+
+static ssize_t
+nsim_numvfs_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct netdevsim *ns = to_nsim(dev);
+
+ return sprintf(buf, "%u\n", ns->num_vfs);
+}
+
+static struct device_attribute nsim_numvfs_attr =
+ __ATTR(sriov_numvfs, 0664, nsim_numvfs_show, nsim_numvfs_store);
+
+static struct attribute *nsim_dev_attrs[] = {
+ &nsim_numvfs_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group nsim_dev_attr_group = {
+ .attrs = nsim_dev_attrs,
+};
+
+static const struct attribute_group *nsim_dev_attr_groups[] = {
+ &nsim_dev_attr_group,
+ NULL,
+};
+
+static void nsim_dev_release(struct device *dev)
+{
+ struct netdevsim *ns = to_nsim(dev);
+
+ nsim_vfs_disable(ns);
+ free_netdev(ns->netdev);
+}
+
+struct device_type nsim_dev_type = {
+ .groups = nsim_dev_attr_groups,
+ .release = nsim_dev_release,
+};
+
static int nsim_init(struct net_device *dev)
{
struct netdevsim *ns = netdev_priv(dev);
@@ -37,8 +156,19 @@ static int nsim_init(struct net_device *dev)
if (err)
goto err_debugfs_destroy;
+ ns->dev.id = nsim_dev_id++;
+ ns->dev.bus = &nsim_bus;
+ ns->dev.type = &nsim_dev_type;
+ err = device_register(&ns->dev);
+ if (err)
+ goto err_bpf_uninit;
+
+ SET_NETDEV_DEV(dev, &ns->dev);
+
return 0;
+err_bpf_uninit:
+ nsim_bpf_uninit(ns);
err_debugfs_destroy:
debugfs_remove_recursive(ns->ddir);
return err;
@@ -52,6 +182,14 @@ static void nsim_uninit(struct net_device *dev)
nsim_bpf_uninit(ns);
}
+static void nsim_free(struct net_device *dev)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ device_unregister(&ns->dev);
+ /* netdev and vf state will be freed out of device_release() */
+}
+
static netdev_tx_t nsim_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct netdevsim *ns = netdev_priv(dev);
@@ -122,6 +260,123 @@ nsim_setup_tc_block(struct net_device *dev, struct tc_block_offload *f)
}
}
+static int nsim_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ /* Only refuse multicast addresses, zero address can mean unset/any. */
+ if (vf >= ns->num_vfs || is_multicast_ether_addr(mac))
+ return -EINVAL;
+ memcpy(ns->vfconfigs[vf].vf_mac, mac, ETH_ALEN);
+
+ return 0;
+}
+
+static int nsim_set_vf_vlan(struct net_device *dev, int vf,
+ u16 vlan, u8 qos, __be16 vlan_proto)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs || vlan > 4095 || qos > 7)
+ return -EINVAL;
+
+ ns->vfconfigs[vf].vlan = vlan;
+ ns->vfconfigs[vf].qos = qos;
+ ns->vfconfigs[vf].vlan_proto = vlan_proto;
+
+ return 0;
+}
+
+static int nsim_set_vf_rate(struct net_device *dev, int vf, int min, int max)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+
+ ns->vfconfigs[vf].min_tx_rate = min;
+ ns->vfconfigs[vf].max_tx_rate = max;
+
+ return 0;
+}
+
+static int nsim_set_vf_spoofchk(struct net_device *dev, int vf, bool val)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+ ns->vfconfigs[vf].spoofchk_enabled = val;
+
+ return 0;
+}
+
+static int nsim_set_vf_rss_query_en(struct net_device *dev, int vf, bool val)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+ ns->vfconfigs[vf].rss_query_enabled = val;
+
+ return 0;
+}
+
+static int nsim_set_vf_trust(struct net_device *dev, int vf, bool val)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+ ns->vfconfigs[vf].trusted = val;
+
+ return 0;
+}
+
+static int
+nsim_get_vf_config(struct net_device *dev, int vf, struct ifla_vf_info *ivi)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+
+ ivi->vf = vf;
+ ivi->linkstate = ns->vfconfigs[vf].link_state;
+ ivi->min_tx_rate = ns->vfconfigs[vf].min_tx_rate;
+ ivi->max_tx_rate = ns->vfconfigs[vf].max_tx_rate;
+ ivi->vlan = ns->vfconfigs[vf].vlan;
+ ivi->vlan_proto = ns->vfconfigs[vf].vlan_proto;
+ ivi->qos = ns->vfconfigs[vf].qos;
+ memcpy(&ivi->mac, ns->vfconfigs[vf].vf_mac, ETH_ALEN);
+ ivi->spoofchk = ns->vfconfigs[vf].spoofchk_enabled;
+ ivi->trusted = ns->vfconfigs[vf].trusted;
+ ivi->rss_query_en = ns->vfconfigs[vf].rss_query_enabled;
+
+ return 0;
+}
+
+static int nsim_set_vf_link_state(struct net_device *dev, int vf, int state)
+{
+ struct netdevsim *ns = netdev_priv(dev);
+
+ if (vf >= ns->num_vfs)
+ return -EINVAL;
+
+ switch (state) {
+ case IFLA_VF_LINK_STATE_AUTO:
+ case IFLA_VF_LINK_STATE_ENABLE:
+ case IFLA_VF_LINK_STATE_DISABLE:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ ns->vfconfigs[vf].link_state = state;
+
+ return 0;
+}
+
static int
nsim_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data)
{
@@ -153,6 +408,14 @@ static const struct net_device_ops nsim_netdev_ops = {
.ndo_validate_addr = eth_validate_addr,
.ndo_change_mtu = nsim_change_mtu,
.ndo_get_stats64 = nsim_get_stats64,
+ .ndo_set_vf_mac = nsim_set_vf_mac,
+ .ndo_set_vf_vlan = nsim_set_vf_vlan,
+ .ndo_set_vf_rate = nsim_set_vf_rate,
+ .ndo_set_vf_spoofchk = nsim_set_vf_spoofchk,
+ .ndo_set_vf_trust = nsim_set_vf_trust,
+ .ndo_get_vf_config = nsim_get_vf_config,
+ .ndo_set_vf_link_state = nsim_set_vf_link_state,
+ .ndo_set_vf_rss_query_en = nsim_set_vf_rss_query_en,
.ndo_setup_tc = nsim_setup_tc,
.ndo_set_features = nsim_set_features,
.ndo_bpf = nsim_bpf,
@@ -164,7 +427,7 @@ static void nsim_setup(struct net_device *dev)
eth_hw_addr_random(dev);
dev->netdev_ops = &nsim_netdev_ops;
- dev->needs_free_netdev = true;
+ dev->priv_destructor = nsim_free;
dev->tx_queue_len = 0;
dev->flags |= IFF_NOARP;
@@ -209,12 +472,18 @@ static int __init nsim_module_init(void)
if (IS_ERR(nsim_ddir))
return PTR_ERR(nsim_ddir);
- err = rtnl_link_register(&nsim_link_ops);
+ err = bus_register(&nsim_bus);
if (err)
goto err_debugfs_destroy;
+ err = rtnl_link_register(&nsim_link_ops);
+ if (err)
+ goto err_unreg_bus;
+
return 0;
+err_unreg_bus:
+ bus_unregister(&nsim_bus);
err_debugfs_destroy:
debugfs_remove_recursive(nsim_ddir);
return err;
@@ -223,6 +492,7 @@ err_debugfs_destroy:
static void __exit nsim_module_exit(void)
{
rtnl_link_unregister(&nsim_link_ops);
+ bus_unregister(&nsim_bus);
debugfs_remove_recursive(nsim_ddir);
}
diff --git a/drivers/net/netdevsim/netdevsim.h b/drivers/net/netdevsim/netdevsim.h
index 8779e6a8f885..32270de9395a 100644
--- a/drivers/net/netdevsim/netdevsim.h
+++ b/drivers/net/netdevsim/netdevsim.h
@@ -13,6 +13,7 @@
* THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
*/
+#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/netdevice.h>
@@ -26,6 +27,7 @@
struct bpf_prog;
struct dentry;
+struct nsim_vf_config;
struct netdevsim {
struct net_device *netdev;
@@ -34,8 +36,13 @@ struct netdevsim {
u64 tx_bytes;
struct u64_stats_sync syncp;
+ struct device dev;
+
struct dentry *ddir;
+ unsigned int num_vfs;
+ struct nsim_vf_config *vfconfigs;
+
struct bpf_prog *bpf_offloaded;
u32 bpf_offloaded_id;
@@ -64,3 +71,8 @@ int nsim_bpf(struct net_device *dev, struct netdev_bpf *bpf);
int nsim_bpf_disable_tc(struct netdevsim *ns);
int nsim_bpf_setup_tc_block_cb(enum tc_setup_type type,
void *type_data, void *cb_priv);
+
+static inline struct netdevsim *to_nsim(struct device *ptr)
+{
+ return container_of(ptr, struct netdevsim, dev);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-16 09:38:13 +0000